利用MybatisGenerator来整合SSM框架

步骤详细解答

1. 下载MybatisGenerator,此处提供网址 https://github.com/mybatis/generator/releases

2. 完成之后使用IntelliJ将下载的源代码作为一个项目打开

3. 运行MainUI类即可出现如下界面(我这里就一个user表,里面有 id int ,age int , name varchar)


记住点击数据库,然后按照我上面所写填写,因为后面我是要使用com.ysp作为包扫描的。

我把代码放在桌面方便复制到项目中。

4. 用IntelliJ平台的Maven创建新的webapp项目


记得导入所需要的包

<dependencies>
  <!--Servlet 3.0, EJB Lite 3.1, JPA 2.0, JSP 2.2, EL 1.2, JSTL 1.2, JSF 2.0, JTA 1.1, JSR-45, JSR-250.-->
  <dependency>
    <groupId>javax</groupId>
    <artifactId>javaee-web-api</artifactId>
    <version>6.0</version>
    <scope>provided</scope>
  </dependency>
  <!--MySQL-->
  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.34</version>
  </dependency>
  <!--MyBatis-->
  <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.4.0</version>
  </dependency>
  <!--gson-->
  <dependency>
    <groupId>com.google.code.gson</groupId>
    <artifactId>gson</artifactId>
    <version>2.7</version>
  </dependency>
  <!--Spring 核心-->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>4.3.7.RELEASE</version>
  </dependency>
  <!--Spring MVC-->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>4.3.7.RELEASE</version>
  </dependency>
  <!--Database Connection Pool 数据库连接池-->
  <dependency>
    <groupId>commons-dbcp</groupId>
    <artifactId>commons-dbcp</artifactId>
    <version>1.4</version>
  </dependency>

  <!--MyBatis-Spring-->
  <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>1.3.0</version>
  </dependency>

  <!--junit4 -->
  <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.10</version>
    <scope>test</scope>
  </dependency>

  <!--SpringTest-->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>3.2.4.RELEASE</version>
    <scope>provided</scope>
  </dependency>

  <!--Spring JDBC-->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>4.3.7.RELEASE</version>
  </dependency>
  <!--log4j-->
  <dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
  </dependency>
  <!--slf4j-->
  <dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.7</version>
  </dependency>
  <dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.7</version>
  </dependency>
  <!-- 映射JSON -->
  <dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-mapper-asl</artifactId>
    <version>1.9.13</version>
  </dependency>

  <!--spring-aop相关-->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-aop</artifactId>
    <version>4.3.7.RELEASE</version>
  </dependency>

  <dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjrt</artifactId>
    <version>1.6.12</version>
  </dependency>

  <dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.6.12</version>
  </dependency>

<dependency>
    <groupId>cglib</groupId>
    <artifactId>cglib</artifactId>
    <version>2.2</version>
  </dependency>
</dependencies>

然后开始配置 web.xml 

这里我把所有的配置都写在了spring-mvc.xml中

然后我把MybatisGenerator生成的代码放到了项目路径下(这里请注意加入之后需要 file->projectstructure->module

将自己的复制进来的文件作为source,具体操作就是点下文件,再点下source)


这里展示下我的目录结构


接下来我给出我的配置:

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
        http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
  <!-- Spring和mybatis的配置文件 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring-mvc.xml</param-value>
  </context-param>

  <!-- 编码过滤器 -->
  <filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <async-supported>true</async-supported>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <!-- Spring监听器 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 防止Spring内存溢出监听器 -->
  <listener>
    <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
  </listener>

  <!--Spring MVC servlet-->
  <servlet>
    <servlet-name>SpringMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
    <async-supported>true</async-supported>
  </servlet>
  <servlet-mapping>
    <servlet-name>SpringMVC</servlet-name>
    <!-- 此处可以可以配置成*.do,对应struts的后缀习惯 -->
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <welcome-file-list>
    <welcome-file>/index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context-4.3.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
">
    <!--开启包扫描-->
    <context:component-scan base-package="com.ysp"/>
    <!--开启springmvc注解-->
    <mvc:annotation-driven/>
    <!--定义跳转的前后缀-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp"/>
        <property name="suffix" value=".jsp"/>
    </bean>
     <!--对静态资源不拦截-->
    <mvc:default-servlet-handler/>

    <!--以下配置Mybatis-->

    <!--数据源-->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://127.0.0.1:3306/test?useUnicode=yes&characterEncoding=UTF-8"/>
        <property name="username" value="root"/>
        <property name="password" value="123"/>
        <property name="maxActive" value="10"/>
        <property name="maxIdle" value="2"/>
        <property name="maxWait" value="12000"/>
    </bean>

    <!--配置sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    <!--mybatis全局配置-->
    <property name="configuration">
        <bean class="org.apache.ibatis.session.Configuration">
            <!--驼峰命名转换-->
            <property name="mapUnderscoreToCamelCase" value="true"/>
            <!--是否开启缓存-->
            <property name="cacheEnabled" value="true"/>
            <!--是否开启懒加载-->
            <property name="lazyLoadingEnabled" value="false"/>
            <!--允许 JDBC 支持自动生成主键,需要驱动兼容-->
            <property name="useGeneratedKeys" value="true"/>
        </bean>
    </property>
        <!--扫描mapper下的xml文件-->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <!--扫描Dao接口并对其实例化-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <property name="basePackage" value="com.ysp.dao"/>
    </bean>

</beans>

4.最后写了一个控制类来尝试效果

package com.ysp.control;

import com.ysp.bean.User;
import com.ysp.dao.UserDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * Created by asus on 2018.03.28.
 */
@Controller
public class HelloControl {
    @Autowired
     UserDao userDao;
    @RequestMapping("hello")
    @ResponseBody
    public String hello(){
        User user=new User();
        user.setAge(18);
        user.setName("俞少鹏");
        user.setId((long)18);
        return ""+userDao.insert(user);
    }
}


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